DE69019248T2 - Optical recording and / or playback device. - Google Patents

Optical recording and / or playback device.

Info

Publication number
DE69019248T2
DE69019248T2 DE69019248T DE69019248T DE69019248T2 DE 69019248 T2 DE69019248 T2 DE 69019248T2 DE 69019248 T DE69019248 T DE 69019248T DE 69019248 T DE69019248 T DE 69019248T DE 69019248 T2 DE69019248 T2 DE 69019248T2
Authority
DE
Germany
Prior art keywords
optical recording
playback device
playback
recording
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69019248T
Other languages
German (de)
Other versions
DE69019248D1 (en
Inventor
Kiyoshi Ohsato
Atsushi Fukumoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of DE69019248D1 publication Critical patent/DE69019248D1/en
Application granted granted Critical
Publication of DE69019248T2 publication Critical patent/DE69019248T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/094—Methods and circuits for servo offset compensation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
DE69019248T 1989-07-21 1990-07-10 Optical recording and / or playback device. Expired - Fee Related DE69019248T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1189272A JPH0354733A (en) 1989-07-21 1989-07-21 Optical recording and/or reproducing device

Publications (2)

Publication Number Publication Date
DE69019248D1 DE69019248D1 (en) 1995-06-14
DE69019248T2 true DE69019248T2 (en) 1995-09-14

Family

ID=16238542

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69019248T Expired - Fee Related DE69019248T2 (en) 1989-07-21 1990-07-10 Optical recording and / or playback device.

Country Status (6)

Country Link
US (1) US5090004A (en)
EP (1) EP0409469B1 (en)
JP (1) JPH0354733A (en)
KR (1) KR910003615A (en)
DE (1) DE69019248T2 (en)
MY (1) MY105948A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2556906B2 (en) * 1989-09-08 1996-11-27 シャープ株式会社 Optical pickup device
JPH0775081B2 (en) * 1990-06-27 1995-08-09 パイオニア株式会社 Optical pickup
JP2935908B2 (en) * 1991-01-30 1999-08-16 パイオニア株式会社 Light spot position detector
JPH04313818A (en) * 1991-01-30 1992-11-05 Pioneer Electron Corp Actuator position detecting device, actuator position controller and track searching controller
JPH04313819A (en) * 1991-01-30 1992-11-05 Pioneer Electron Corp Light spot position detecting device
US5173598A (en) * 1991-05-10 1992-12-22 U.S. Philips Corporation Optical scanning beam position control system which is free of modulation by tracking error
ATE168491T1 (en) * 1992-08-12 1998-08-15 Koninkl Philips Electronics Nv DEVICE FOR OPTICAL SCANNING OF A SURFACE
JP3103220B2 (en) * 1992-10-30 2000-10-30 パイオニア株式会社 Optical signal reproduction device
KR970011227B1 (en) * 1994-04-30 1997-07-08 대우전자 주식회사 Multi laser beam type optical pick-up
JPH08263855A (en) * 1995-03-23 1996-10-11 Nec Corp Optical head transfer controller
TW444201B (en) * 1998-02-16 2001-07-01 Hitachi Ltd Optical head
US6963522B2 (en) * 2001-05-31 2005-11-08 Nec Corporation Optical head apparatus and optical information recording and reproducing apparatus
US20020181353A1 (en) * 2001-05-31 2002-12-05 Nec Corporation Optical head apparatus and optical information recording and reproducing apparatus
US7626900B2 (en) 2003-09-24 2009-12-01 Sony Corporation Optical pickup and disk drive apparatus
JP2008542961A (en) * 2005-05-31 2008-11-27 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Optical system
CN101185130A (en) * 2005-05-31 2008-05-21 皇家飞利浦电子股份有限公司 An optical data recording/reproducing system picking up multiple tracks between guard bands
US20080192610A1 (en) * 2005-06-06 2008-08-14 Koninklijke Philips Electronics, N.V. Optical System with 3 Spot Radial Tracking

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4504938A (en) * 1981-04-07 1985-03-12 Victor Company Of Japan, Limited Device for feedback controlling focus of an optical system in an information recording/reproducing apparatus
JPH0675297B2 (en) * 1981-08-28 1994-09-21 株式会社日立製作所 Optical information recording / reproducing device
JPS5958637A (en) * 1982-09-28 1984-04-04 Sony Corp Optical reproducing device
JPH0687316B2 (en) * 1983-02-10 1994-11-02 オリンパス光学工業株式会社 Optical playback device
JPH0795371B2 (en) * 1984-02-29 1995-10-11 日本電気ホームエレクトロニクス株式会社 Optical head
JPS6194246A (en) * 1984-10-15 1986-05-13 Sony Corp Tracking error detection system
US4787075A (en) * 1984-12-26 1988-11-22 Canon Kabushiki Kaisha Optical information recording medium and apparatus for recording/reproducing information using the same
US4750162A (en) * 1985-07-16 1988-06-07 Victor Company Of Japan, Ltd. Optical tracking system utilizing three photo-detectors
EP0238055B1 (en) * 1986-03-19 1993-09-15 Sanyo Electric Co., Ltd. Optical recording apparatus
JPS63104225A (en) * 1986-10-21 1988-05-09 Csk Corp Tracking system for optical recording medium
FR2613866B1 (en) * 1987-04-07 1994-01-14 Mitsubishi Denki Kk APPARATUS FOR OPTICAL INFORMATION RECORDING AND REPRODUCTION
JPH0237940A (en) * 1988-07-26 1990-02-07 Kawasaki Steel Corp Production of slab for hot-rolled steel plate having excellent surface characteristic

Also Published As

Publication number Publication date
DE69019248D1 (en) 1995-06-14
EP0409469A3 (en) 1992-01-22
EP0409469A2 (en) 1991-01-23
KR910003615A (en) 1991-02-28
US5090004A (en) 1992-02-18
MY105948A (en) 1995-02-28
EP0409469B1 (en) 1995-05-10
JPH0354733A (en) 1991-03-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee